Katherine Jackson poses for a portrait in Calabasas, Calif., Wednesday, April 27, 2011. Jackson is lending her name and floral tastes to arrangements being sold online in a venture that provides her some peace-of-mind in advance of the upcoming trial for the doctor accused of her son Michael Jackson's death. (AP Photo/Matt Sayles)

Authorities said Sunday they believe Katherine Jackson, the mother of Michael Jackson and the guardian of his three minor children, is safe in Arizona with family members after she was reported missing.

According to the Associated Press, the disclosure came after another concerned family member officially reported her missing Saturday night amid a dispute over the estate of her superstar son.

The Los Angeles County Sheriff’s Department was still trying to speak with Katherine Jackson but said she reportedly is with other relatives.

Paris Jackson, the 14-year-old daughter of the late legend, tweeted early Sunday that her grandmother was missing.

“I haven’t spoken with her in a week I want her home now,” she posted from her Twitter account. She also tweeted a number for people to contact in case they saw the 82-year-old matriarch of the famous singing clan.

On Friday, Jermaine Jackson tweeted that his mother was resting on the orders of a doctor in Arizona.

“This is our mother and her health is paramount. We are not inventing or plotting anything,” he posted. “We are following doctor’s advice. Period.”"

Katherine Jackson also hadn’t been in contact with her attorneys, who worked Sunday to learn more information about her whereabouts and why she had suddenly become incommunicado, including with her grandchildren.

“First of all, let’s hope that this is all just a big misunderstanding and a totally benign situation,” her attorney Perry Sanders Jr. said Sunday. “Assuming that she did actually leave on doctor’s orders, no matter which doctor, it has certainly created an absolutely irregular situation whereby she has been out of contact with her grandchildren.”

The mystery of Katherine Jackson’s whereabouts was compounded by a recent visit from her son’s former physician, Dr. Allan Metzger, who examined her July 14 after being brought to her home in Calabasas by someone close to the family, said Katherine Jackson’s attorney Sandy Ribera.

The visit came one day before Katherine Jackson was scheduled to depart on an RV trip to the Southwest to watch her sons perform at concerts. The elder Jackson never made any of the shows and Metzger apparently told her not to take the trip, Ribera said.

Metzger is not Katherine Jackson’s primary physician and her regular doctor wasn’t aware of his house call until concerns about Katherine Jackson’s whereabouts were raised, Ribera said.

Paris Jackson referenced Metzger’s visit in a tweet early Sunday, writing, “the same doctor that testified on behalf of dr murray saying my father was a drug addict (a lie) is caring for my grandmother… just saying.”

Conrad Murray was convicted of involuntary manslaughter for the June 2009 propofol overdose death of Jackson at age 50.

Katherine Jackson has been caring for Paris, Prince Michael and Blanket Jackson since their father’s death. It was unclear who is taking care of the children in her absence.